Etching or like machine



W. S. EATON.

ETCHING 0R LIKE MACHINE.

APPLICATION FILED JULY 1. 1921.

1 42 1,427, v Patehted July 4, 1922. I 2 SHEETS-SHEET 1 W. S. EATON. 'v

ETCHING 0R LIKE MACHINE.

APPLICATION FILED JuLY1, 1921.

1,42 1,427. v Patented July 4, 1922 I j@g 2 SHEETS-SHEET 2.

air

WILLIAM S. EATON, OF SAG HARBOR, NEW YORK.

ETVCI-IING OR- LIKE MACHINE.

Specification of Letters Iatent.

PatentedJuly, 4,1922.

Application filed'J'uly 1, .1921. Serial No. 481,823.

To all whom, it may concern:

Be it known that l, \i iLLrarr S. Enron, a citizen of the United States,residingat Sag Harbor, in the county ot'f'Sutlolk and State of'ilewYork, have invented certain new and useful Improvements in Etchingmachine may be controlled to create a circular design embodying" lettersand it desired suitable marginal lines or ornamentation.

In the art to which my inventionrelates, there are two distinct types ofmachines; one in which material of a printing surface is removed bymeans of a graver or routing tool so that the printing plate whenremoved from the machine with the possible exception of hand retouching,is ready for use; and one in which a dry point adapt'ed'to prepare aplate for acid etching is employed.

The first type is generally known in the trade as an engraving; machineand the latter type as an etching machine.

In both types of machines it. is possible to employ a structure whereinthe work support is stationary and the work point or tool carrier isuniversally movable on a single plane under the control of a pendulous.stylus point carrying, transmitterarm' which is adapted to be moved inaccordance wi h a pattern upon an immovable pattern support: or astructure may be employed wherein the work support is movable in re.-lation to the work point or tool.

In etching machines the practice is to move the tool in relation to thework support, while in engraving machines the other practice isgenerally followed, particularly when a routing head is used.

Such machines are particularly adapted ous adjustment securinga variablerelation the work plate and the work point or tool, and of the patternand the tracing stylus carried by the transmitter arm. These adjustmentswould necessaril'y have to be entirely independent, one or the other,precluding possibility of accuracy in what is necessarily precisionwork.

With the above conditions in mind,I have produced an etching or like"machine embodying therein in combination with other working parts of themachine.- an attachment whereby letters, or (and) numerals, may bereproduced upon the work plate with accurate spacing in atrue circularform. This attachment embodies therein a rotatable pattern plate so astopermit the completionof the work plate through a proper actuation of theattachment without disturbing any of the other adjustments'in a machine.

Said attachment so constructed that a straight line border or a linebackground design maybe developed about the letters and numerals, theconstruction being such as to permit variation of'the characterotthebackground design, if desired;

Since, while the circular d'esignis being of the rotary pattern plate,requiringin the attachment the provision of means upon which the entirecircular arrangement 0t" letters or (and) numerals may be laid out andproperly centered,

In circular designs, it is usually desired to have all of the lettersread-able from the same position, which result is secured by making thepattern plate reversible and havingupon one side thereof letters of thealphabet and the digits with their tops toward the periphery of theplate and upon the other side thereof. similar letters and digits with tieir tops toward'the axis of rotation of the plate.

he invention. consists primarily in an etchingor like machine embodyingtherein a work platesupport, a carrier for a work point or tool, saidsupport and said carrier being capable of relative universal movementupon a single plane, a transmitter arm adapted to cause-such relativemovement; a-

tracing stylus carried thereby, a pattern such other novel features ofconstruction and j the plate.

depressed letters, digits or other characters circularly arrangedthereon about a common center, and a layout sheet carried by said baseand projecting beyond the edge of said plate, wherebysucceedingmovements of saidrotary platenecessary to secure the completeddesign, may be indicated; and in combination of parts as are hereinafterset forth and descr1bed,-and more particularly pointed out in the claimshereto appended.

Referring to the drawings,

Fig. 1 'is a front elevation of a portion of an etching machineembodying my invention;

Fig. 2 is a plan view, upon a larger scale, of the circular patternattachment;

Fig. 3 is a fragmentary view of the reverse side of the rotary plate ofsaid at tachment; and

Fig. 1- is a view of a fragmentary portion of a plate which may be usedfor developing a background. for the lettering on the plate alone or inconjunction with other mechaf nisms of the attachment.

Like numerals refer to like parts throughout the several views.

In the accompanying drawings, I have illustrated my invention as appliedto an etching machine of a type heretofore patented to me, in whichwhile a machine is in op eration, the work point carrier is movable inrelation to the support for the work plate, and said supportisadjustable to secure the proper line spacing in, and theproper'positioning of the design being produced upon I will, therefore,merely describe the broad essential characteristics of this machine andomit all detailed description thereof. a i

In the drawings, 10 indicates the work plate support which is carried bya column 11, and remains stationary when .once set to bring a design inthe proper position on 1a plate: The work plate support is adjustablealong lines at right angles to each. other in any desired manner, thisbeing an old and well known expedient in this art to permit word andline spacing in, and the proper positioning of, the design upon a plate.The head 12 of said column is provided with a plurality of bearing cups13 upon which a carriage 14 is mounted by means of bearing balls 15,thus permitting universal movement of said carriage upon'a single plane.Supported by said carriage and movable there with is a work' point andits support 16.

1 Connected to the carriage 141- by means of a compass mount or' otheruniversal joint,

indicated in dotted lines, is a transmitter arm 17 having slidablymounted therein a stylus point 18. Said transmitter arm 17 intermediatethe ends thereof is pivotally mounted in a ring 19 which in turn ispivotally mounted in the bracket 20, said bracket being adjustablevertically of the column 11 so as to permit variation in the scale ofre-- production.

The pattern table is shown at 21.

All of the characteristics above referred to considered specifically,form no part of my present invention, being old and well known 1n theart, and being shown merely by way of illustrating one type of machineduced upon a work plate carried by the sup-- 1 port 10, in a true circleand j in the desired position upon said plate.

This attachment comprises a rigid base 22 which may be immovably securedto the pattern table 21 in any desired manner as by means ofdiametrically opposite studs 23 carried on the under side thereof andadapted to enter sockets in said table. Rotatably mounted. upon saidbase by means of a pivot screw 24, is a circular pattern plate 25, saidplate being locked in any adjusted position by means of the shoulderednut 26 mounted upon said screw.

Between the plate 25 and the base 22 is a layout disk 27 which is alsorotatable about the pivot screw 24, this disk 27 preferably being madeof celluloid so as to permit its repeated use, altl'iough, any otherdesired material may be employed, the use of celluloid being merely aneconomy in the operation of the machine. i

The base 22 is provided with a cutout por tion indicated at 28 tofacilitate access to the disk 27 for the purpose of adjusting it aboutthe pivot 24 in centering the design laid out about the edge of thisdisk; The

disk 27 is of greater diameter than the said letters and digits.

The letters and digits are indicated at 31 upon one side of said plateand at 32 upon the other side thereof, it being. noted that thecharacters 31' have the tops thereof directed toward the axis ofrotation of the plate, while the characters 32 have the tops thereordirected toward the periphery thereof, a condition which permits the useof one side'of the plate in reproducing these characters toward thebottom of the circular de Sign, and the other portion thereof forreproducing the characters toward the top of the design, which willresult in all the characters being readable from the same position.

In addition to guiding the stylus point when reproducing differentselected letters, digits, or other characters, I utilize said plate 25in laying out the completed design upon the disk 27, said plate 25 beingprovided with marginal gauge lines indicated at 33, for justifying theletters of the design in laying out the design upon said disk 27.

The plate 25 being removable in relation to the base 22, said plate maynot only be reversed to permit the utilization of the characters 31 orthe characters 32 as desired, but plates having different styles ofcharacters may be selectively used upon the base. Changes of size in thereproduced designs may be secured by adjustment of the. leverage atwhich the transmitter arm 17 is operative upon the carriage 14.

By forming the characters: as a series of closely juxtaposed lines, I amenabled to produce either outline or solid characters in thereproduction, since the width of cut of an ordinary routing tool orgraver is greater than the width of said lines and the spaces betweensame, and when making etched plates, the acid will undercut the portionsof the plate beneath the resist between the lines made by the dry point.By using the outer lines only, outline letters may be formed in thereproduction. This is an old and well known expedient in this art and inthe related arts of engraving and etching, antedating the use ofmachines otthe general character to which my invention relates.

IVhile with the use of the plate 25, the letters and characters used ona plate may be circularly arranged, it may be desired to provide thedesign with an outline border upon opposite sides of the lettering, or abackground for the lettering, or other portions of the design. Tosimplify the operation of the machine, I provide the attachment withmeans having a. fixed relation to the plate 25 by which such border orbackground lines may be accurately positioned with relation to thelettering.

Preferably, as shown in Figs. 1 and 2 of the drawings, I provide thebase: 22 with a. mechanism which may be utilized for reproducing eitherborder lines or a. background design, said mechanism being capable ofadjustment to vary the character of either of said types of lines.

This mechanism comprises a rotatable arm 34 pivotally mounted below theshoulder upon the nut 26 so as to permit the free rotation of the armunder all conditions. Slidably mounted upon said arm 34 is a carriage 35having parallel lines of depressions 363 7 thereon extendingsubstantially radially of the pivot 24. The depressions in one line 37are spaced a greater distance apart than those in the other line 36. Thecarriage 35 is held. upon the. arm 34 in any desired manner as by means0t the tongue 38 which is slidably mounted in the slot 39 and held inthis relation by means of an impact plate 40 secured thereto on theunder side of said arm 34.

The carriage 35 is normally forced toward the pivot 24 by means of thespring 41. R0- tatably mounted upon the pivot 24 is a plate 42 having anundulatory or convolute edge adapted to be engaged by a reduced bearingend upon the plate 40. The arm 34 has a socket therein adapted toreceive a pin 43 in a position where it will hold the impact plate 40out of engagement with the perimeter of the plate 42. When this pin isin position, the arm 34 and carriage 35 may be rotated about the pivotscrew 24 so as to describe a true circle upon the work plate. It thepin" 43 be removed, the carriage 35 under the-control of the spring 41,the plate 42 and the impact plate 40 will develop an undulatory line.The spacing of the depressions 36 and 37 will permit any desired radiallo cation of either the circular or the undula tory line.

When the pin 43 is removed, the, character of the reproduction will bethe same as that which will be secured by a circular plate havingthereon a sequence of undulatory lines 45 as shown inFig. 4 of thedrawings. Consequently, it is apparent that, if'desired, such a platemay be used for producing undulatory background designs, or border line,in lieu of the plate 42.

If it be desired to weave the lines in making an undulatory design, thiseffect may be secured by shifting the plate 42 about the pivot 24 aftereach succeeding line is made, or if the plate 44 be used in lieu of saidplate 42, by shifting this plate about the pivot 24.

By using plates 42 having different contours, the general character ofthe undula tory line design may be varied, the removability of theplates 42 permitting substitution of one plate for another.

The operation of the herein described device is substantially as followsThe base 22 is mounted upon the work table 21 by means of the pins 23 soas to hold it in a fixed relation to said table. The 125 lettering isthen laid out upon thelayout disk 27 by bringing the letter upon theplate 25 corresponding with the first letter of the copy. to the left ofthe operator, and indicating the letter upon said disk 27 and 130 alsothe location of the lines 33 upon opposite sides o'l. said letter. Theplate 25 is then repeately turned to bring succeeding letters adjacentthe letter previously indicated upon-the disk 27, theline 33 to the leftof each letter upon said plate 25 being brought into register with thepreviously formed space lines to the right of the layout upon the disk27. t In this way the complete wording will appear upon the disk 27 withthe letters and words properl spaced. During this operation, said diskwill be held stationary by the clamp nut 30. The portion of the copywhich is to appear at the top of the circular design will then becentered in relation to the plate 25 in a position toward the operatoror toward the bottom of the layout sheet, and the portion of the copy toappear at-the bottom of the design, ac"

curately centered with relation to the top of the layout sheet asindicated in Fig. 2 of the drawings. It is possible to lay out differentportions ofthe design at different times during the progress of thework. The location of different portions of the design is determined bytheir adjustment with re lation to the base 22 without regard to theirlocation upon the disk 27.

WVhen the letters have been laid out properly on the disk 27 and saiddisk has been accurately centered, the clamp nut 30 is set and the nut26 is loosened so as to permit the plate 25 to be rotated until someletter thereon is brought into register with a corresponding letter uponthe layout disk, whereupon the nut 26 is set to hold the plate 25against movement, while the stylus 18 is used to trace this letter uponthe plate 25.

If the portion of the design to be reproduced upon the work plate by thepoint 16 is to appear at the bottom of the design, the

disk 27 must be so positioned as to bring the letters or the charactersto be reproduced, at the top thereof as shown in Fig. 2, and thedepressed letters 31 must be used, the letters or other charactersappearing upside down to the operator as he is working upon same. Thiscondition is due to the fact that in an etching. or like machine,wherein the pendulous transmitter arm is supported by a universal jointintermediate its ends, all of the conditions in the reproduction arereversed, the left of the pattern becoming the right in thereproduction, the right becoming the left, the top becoming the bottomand the bottom becoming the to 1in the embodiment of the invention shownin the drawings, when the characters upon the pattern to be reproducedare at the top as shown in Fig. 2, they will appear at the bottom ofthedesign in the reproduction, and the letter N while it appears to theextreme left upon the disk 27 will appear at the extreme right upon thereproduction,

and the other letters will appear in the reverse of their sequentialrelation upon said disk 27. In the reproduction of the characters 31,they will read from the bottom of the circular design.

When it is desired to reproduce the letters upon the upper portion ofthe circular design, the plate 25 is reversed and is turned to the rightor left, as desired, until letters, digits or other characters 32thereon corre sponding with the various letters on the layoutdisk 27have been successively brought into the desired relation, each letterbeing traced while it is associated with the corresponding letter uponthe layout disk. Since the letters uponwhich the operator is workingappear upside down to him at the bottom of the layout disk, they willappear reversed upon the reproduction so that they will read from thesame position as the letters upon the bottom of the design.

In the reproduction, the letters will appear backward as in. ordinaryprinting types, the machine merelyinverting the letters in changingtheir position upon the plate, but otherwise absolutely reproducing theletter as upon the pattern.

Of course, it it is not desired to have all oi": the work read from thesame position. upon the reproduction, the charactr-n's upon either sideof the plate 25 may be used for reproducing the entire layout upon thedisk 27.

When used in an etchingmachine of the character shown in the drawings,the use of all of the lines of each letter or numeral will result in asolid letter, and the use of the outer lines only will result in anoutline letter, as described heretofore.

V it be desired to provide a circular border, ora background made ofconcentric circles, the stylus 18 carried by the transmitter arm 17 isinserted in some one of the depressed points in the carriage 35 and thearm 34% in this carriage rotated about the pivot 24, the result beingthedescribing of a single narrow, true circular line without or withinthe letters in the reprodlliotion, and it it be desired to widen thisline. this operation is repeated with, the next depressed point in oneline as 86, thus by using adjacent depressions in this line, describinga sequence of closely adjacent parallel circles, which will produce asingle heavy black line when a plate is etched, or cause the routingtool to remove all metal. between the first and the last linesdescribed. If it is desired to have the border made up of parallellines, the depressed points in the line 37 are used, these points beingspaced apart sufficiently to leave a barrier between succeeding lineswhether the plate be routed out or acid etched.

This straight line design, by using different depressions in the line 36or 37, but not succeeding depressions, may be used to provide abackground for the letters or numerals and toward the center of thedesign.

If it be desired to provide an'undulatory border or background, the stoppin 43 may be removed, thus permitting the impact plate %0 to follow theconvolute perimeter of the plate 2E3, thus giving a wavy effect to thereproduced line, or any other desired effect according to the contour ofthe plate 42 which is used.

By selecting different depressions in either line 36 or 3'7, the borderor design may be widened or retained in the form of a line design, andmay be limited to'opposite sides of the letters or characters, or acrossthe body thereof so as to give a background efl'ect. The same effect canbe secured by the use of a plate 44. By shitting the plate 12 or theplate 4% a distance less than that between the centers of two elevationstherein or between two lines e5, succeeding lines may be caused to crossand re-cross each other or weave in and out in a manner to increase theintricacy or pleasing effect of the border or background.

During the operation of the machine the work platesupport 10 in the typeof machine shown, occupies a fixed position, the circular effect in thedesign being secured solely through the movements of the car riage 14:under the control of thetransmitter arm 17 and stylus 18 in'followingthe characters upon the pattern plate.

Through the employment of the layout disk 96 and the rotatable patternplate 25, any desired combination of letters or characters may besecured.

The base and its appurtenances are used merely when creating a circulardesign. If it be desired to incorpoate in this" design, or about it,rertiliueally arranged let ters, this can be done by removing the base22 and using the etching or like machine in the usual manner.

The diameter of the plate 25 is controlling as to the proportionatediameter of the circle reproduced, and of the heightotthe letters orcharacters in the circular design, although the adjustment of themachine will control the absolute proportions of both in thereprruluctiou.

Disks 25 0t ditlercnt diameters and having letters of ditl'erent sizesorstyles thereon may be used, in-the machine, however, although forordinarypurposes but a single disk is required.

It is not my intention to limit tion to the precise details orconstruction shown in the drawings, it being apparent that-such .may bevaried without departing from vthe spirit and scope of the invention.

Having described the invention, what I claim as new and desire to haveprotected by Letters Patent, is

1. an etching or like machine embodying the invenand havingdepressed'letters digits or other characters circularly arranged thereonabout carrier being'c-apalole of relative universal arm adapted to causesuch relative movement, it tracing .stylus .carried thereby, a

pattern table,.:a basesecuredthereto, a circular pattern plate rotatablymounted on saidbase in operative relation to said-stylus a commoncenter, and a layout sheet carried .by said base and projecting beyondthe edge of said plate, whereby succeeding movements ofsaid rotary platenecess-aryto secure'the completed design, maybe indicated.

2. An etching or like machine embodying therein-a work plate support, acarrier :for'

:a work point or tool, said support andsaid movement. upon asingle-plane, a transmitter arm adapted to cause such relative movementa tracing stylus carried thereby, a pattern table, a basesecured-thereto, a pivot carried by said base, a circularpatteruplateremovably and .rotatably mounted on said pivot-and in operativerelation-to said stylus and'having depressedletters, digits, or othercharacters circularly arranged upon opposite sides JthereOf about the:aXis of 'said='95 pivot, the letters, digits, or other charactersuponone side 'of-said plate having :the tops thereof presented towardthe periphery thereof, and upon the other side presented toward saidpivot, anda layoutsheetcarried by saidbase andprojecting beyond the,edge

.of said plate, whereby succeeding movementsof said rotaryplatenecessary/to secure the completed design, may-beindicated.

3. An etchingor likemachine embodying thereina work plate-support, acarrier for a avork point or tool, said support and said carrierbeinglcapable of relative universal movement upon a single plane,a-transmitter arm adapted to cause such relative move- 1110 ment,tracingstylus carried thereby, a pattern table, a "base secured thereto,a circular ;p.,a;tternlate rotatably mounted on said base in operativerelationto saidstylus and having depressed letters, digits, orotherchar- .acterscircularly arranged thereon about a common center, and alayout sheet carried by saidbase, rotatably mounted upon said basetohave movement about the same axis as, and projecting beyond the edge of,said 0 plate, whereby succeeding movements of said rotary platenecessary to secure the com pleted design, maybe indicated.

4. An etching or like machine embodying therein a workplate support, acarrier forj a work point or tool, said support and :said carrier beingcapable of relative universal movement upon a single plane, a:transmitter arm adapted ,to cause such relative movement, a tracingstylus carried thereby, a pattern table, a base secured thereto, acircular pattern plate rotatably mounted on said base in operativerelation to said stylus and having depressed letters, digits, or othercharacters circularly arranged thereon about a common center, a layoutsheet carried by said base and projecting beyond the edge of said plate,whereby succeeding movements of said rotary plate necessary to securethe arm adapted to cause such relative movement, a tracing styluscarried thereby, a pattern table,-a base secured thereto, a circularpattern plate rotatably mounted on said base in operative relation tosaid stylus and having depressed letters, digits, or other characterscircularly arranged thereon about a common center, a layout sheetcarried by i said base and projecting beyond the edge of said plate,whereby succeeding movements of saidrotagry plate necessary to securethe completed design, may he indicated, and clamping means whereby saidsheet may be secured in any ad usted position.

6. An etching or like machine embodying k therein a work plate support,a carrier for a work point or tool, said support and said as,

carrier being capable of relative universal movement upon a slngleplane, a transmitter arm adapted to cause such relative movement, atracing stylus carried thereby, a pattern table, a base secured thereto,a circular pattern plate rotatably mounted on said base in operativerelation to said stylus and having depressed; letters, digitsyor othercharacters circularly arranged thereon about a coii'unon center, alayout sheet carriedby said base and projecting beyond the edge of saidplate, whereby succeeding movements of said rotary plate necessary tosecure the completed design, may be indicated, means whereby said platemay be held in any adjusted position, and clamping means whereby saidsheet may be secured in any ad usted position.

7. An etching or like machine embodying therein a work plate support, acarrier for a work point or tool, said support and said carrier beingcapable of relatlve universal movement upon a single plane, atransmitterarm adapted to cause suchrelative move- 11181113, atracingstylus carried thereby, apattern table, a base secured thereto, acircular pattern plate rotatably mounted on said base in operatlverelation to said stylus and having depressed letters, digits, or other"characters circularly arranged thereon about plate to formsubstantially circular lines adjacent the characters.

8. An etching or like machine embodying thereinv a work plate support, acarrier for a work point or tool, said support and said carrier beingcapable} of relative universal movement upon a single plane, atransmitter arm adapted to cause such relative movement, a tracingstylus carried thereby,

a pattern table, a base secured thereto, a circular pattern platerotatably mounted on said base in operative relation to said stylus andhaving depressed letters, digits, or other characters circularlyarranged thereon about a common center, a layout sheet carried by saidbase and projecting beyond the edge of said plate, whereby succeedingmovements of said rotary plate necessary to secure the completed design,may be indicated, and an arm rotatably mounted upon said base about anaxis concentric with the axis of said plate, said arm having alineddepressions therein whereby the stylus will be guided in a substantiallycircular path to form lines adjacent the characters in the reproduceddesign.

9. An etching or like machine embodying therein a work plate support, acarrier for a work point or tool, said support and said carrier beingcapable of relative universal movement upon a single plane, atransmitter arm. adapted to cause such relative movement, a tracingstylus carried thereby, a pat terntable, a base secured thereto, acircular pattern plate rotatably mounted on said base in operativerelation to said stylus and having depressed letters, digits, or othercharacters circularly arrc nged thereon about a common center, a layoutsheet carried by said base and projecting beyond the edge of said plate,whereby succeeding movements of said rotary plate necessary to securethe completed design, may be indicated, an arm rotatably mounted uponsaid base about an axis concentric with the axis of said plate includinga carriage having alined depressions therein whereby the stylus will beguided to form lines adjacent the characters of the reproduced design,said carriage being capable of movement radially of the axisoiflmovement of said arm, and means whereby radial movement will beimparted to said carriage substantially simultaneously with itscircumferential movement.

10. An etching or like machine embodying therein a work plate support, aCarrier for a work point or tool, said support and said carrier beingcapable of relative universal movement upon a single plane, atransmitter arm adapted to cause such relative movement, a tracingstylus carried thereby. a pattern table, abase secured thereto, acircular pattern plate rotatably mounted on said base in operativerelation to said stylus and having depressed letters, digits, or othercharacters circularly arranged thereon about .a common center, a layoutsheet carried by said base and projecting beyond the edge of said plate,whereby succeeding movements of said rotary plate necessary to securethe completed design, may be indicated, an arm rotatably mounted uponsaid base about an axis concentric with the axis of said plate includinga carriage having alined depressions therein whereby the stylus will beguided to form lines adjacent the characters of the reproduced design,said carriage being capable of movement radially of the axis of movement of said arm, means whereby radial movement will be imparted to saidcarriage substantially simultaneously with its circumferential movement,and removable means whereby said carriage may be (flUSG-lll to followeither a true circular path or have radial movement under the control,of said means.

11. An etching or like machine embodying therein a work plate support, acarrier for a work point or tool, said support and said carrier beingcapableoi relative universal movement upon a single plane, a transmitterarm adaptedvto cause such relative movement, tracing stylus carriedthereby, a pattern table. a base secured thereto, a circular patternplate rotatably mounted on said base in operative relation to saidstylus and hav; ing depressed letters, digits. or other characterscircularly arranged thereon about a common center, a layout sheetcarried by said base and. projecting beyond the edge of said plate,whereliy succeeding movements of said rotary plate necessary to securethe completed design, may be indicated, an arm rotatz-ihly mounted uponsaid base about an axis concentric with the axis of said plate includinga carriage having alined depressions therein whereby the stylus will heguided to form lines adjacent the characters o1 the reproduced design,said carriage being capable of movement radially of the axis of movementof said arm, a plate positioned about the axis of movement of said armhaving an undulatory or convolute edge, an impact plate carried by saidcarriage and adapted to co-operate with theedge of said plate, and aspring connected with said arm and-said carriage whereby said impactplate is normally forced toward the undulatory or convolute edge'ot saidplate, and said carriage,

with the movement of the stylus, will have radial movement impartedthereto simultaneously with its circumferential movement;

12. An etching or like machine embodying therein a worlrplatesu-pport,-a carrier for a work point or tool,-said support and saidcarrier being capable-of relative universal =movement upon asingle'plane, a transmitter arm adapted itO cause such relativemovement, atracing stylus carried thereby, apatternit-able, a basssecured thereto,ac1rcular completed design, may be indicated, an arm,rotatablymounted upon said base about an axis concentric with the axisof said plate including a-carriage'having alined depressions thereinwhereby the stylus will be guided to form lines adjacent the charactersof the reproduced design, said carriage being capable of movementradially of the axis of movement of said arm, a plate positioned aboutthe axis ofmovement of said arm having'an undulatory .or convoluteedgmanim- .pact plate carried by said carriage and adapted to co-operatewith the edge of said plate, a spring connected with said arm and saidcarriage whereby said impact plate is normally forced toward vtheundulatory or convolute edge of said plate, and said care riage, withthe movement of the stylus, will have radial movement imparted theretosimultaneously with its circumferential movement, and a pin removablymounted upon said arm in operative relation to said carriage, wherebysaid impact plate may be held out oi engagement with the undulatory orconvolute edge of said plate, or be permitted to engage'same. I

13. An etching or like machine embodying therein a work plate support, acarrier for a workipoint or tool, said support and said carrier beingcapable of relative universal rotatably mounted upon said base about anaxis concentric with the axis of said plate including avcarriage havingalined depressions therein whereby the stylus will be guided to formlines adjacent the characters of the reproduced design, said carriagebeing capable ot movement radially of the axis of movement oi said arm,a plate positioned about the axis of movement of said arm having anundulatory or convolute edge, an impact plate carriedby said carriageand adapted to co-operate with the edge of said plate, and a springconnected with said arm and said carriage whereby said impact plateisnormally forced toward the undulatory or convolute edge of said plate,and said carriage, with the movement of the stylus, will have radialmovement imparted thereto simultaneously with its circumferentialmovement, said plate having the undula-tory or convolute edge beingadjustable about the axis of said arm, whereby succeeding lines may becaused to cross and re-cross each other.

14. An etching or like machine embodying therein a work plate support, acarrier for a workpoint or tool, said support and said carrier beingcapable of relative uni-- versal movement upon a single plane, atransmitter arm adapted to cause such relative movement, a tracingstylus carried thereby, a pattern table, a base secured thereto, a pivotcarried by said base, a circular pattern plate removably and rotatablymounted on said pivot and in operative relation to said stylus and.having depressed letters, digits, or other characters circularlyarranged upon opposite sides thereof about the axis of said pivot, theletters, digits, or other characters upon one side of said plate havingthe tops thereof presented toward the periphery thereof, and upon theother side presented toward said pivot, a layout sheet :arried by saidbase and projecting beyond the edge of said plate, whereby succeedingmovements of said rotary plate necessary to secure the completed design,may be indicated, an arm rotatably mounted upon said base about an axisconcentric with the axis of said plate including a carriage havingalined depressions therein whereby the stylus will be guided to formlines adjacent the characters oi the reproduced desi n said carriagebeing ca )able of: move- Inent radially of the axis of movement of saidarm, a plate positioned about the axis of movement of said arm having anundulatory or convolute edge, an impact plate carried by said carriageand adapted to cooperate with the edge of said plate, and a springconnected with said arm and said carriage whereby said impact plate isnormally forced toward the undulatory or convolute edge of said plate,and said carriage, with the movement of the stylus, will have radialmovement imparted thereto simultaneously with its circumferential movement, said plate having the undulatory or convolute edge being removablymounted upon said pivot, whereby a plate of one contour may besubstituted for a plate 0i another contour.

15. An etching or like machine embodying therein a work plate support,acarrier for a work point or tool, said support and said carrier beingcapable of relative universal movement upon a single plane, atransmitter arm adapted to cause such relative movement, a tracingstylus carried thereby, a pattern table, a base secured thereto, a pivotscrew carried by said base, a circular pattern plate removably androtatably mounted on said pivot and in open tive relation to said stylusand having depressed letters, digits, or other characters circularlyarranged upon opposite sides thereof about the axis of said pivot, theletters, digits, or other characters upon one side of said platehaving'the tops thereof presented toward the periphery thereof, and uponthe other side presented toward said pivot, a layout sheet carried bysaid base and projecting beyond the edge of said plate, wherebysucceeding movements of said rotary plate necessary to secure thecompleted design, may be indicated, an arm rotatably mounted upon saidbase about an axis concentric with the axis of said plate including acarriage having alined depressions therein whereby the stylus will beguided to form lines adjacent the ch araoters of the re produced design,said carriage being capable of movement radially of the axis of movementof said arm, a plate positioned about the axis of movement of said armhaving an undulatory or convolute edge, an impact plate carried by saidcarriage and adapted to co-operate with the edge of said plate, a springconnected with said arm and said carriage whereby said impact plate isnormally forced toward the undulatory or convolute edge of said plate,and said carriage, with the movement of the stylus, will'have radialmovement imparted thereto simultaneously with its circumferentialmovement, said. plate having the undulatory or convolute edge beingremov'ably mounted upon said pivot screw, whereby a plate of one contourmay be substituted for a plate of another contour, and a shouldered nutcooperating with said pivot screw adapted to engage and look saidpattern plate with relation to said base while permitting free rotarymovement of said arm.

16. An etching or like machine embodying thereina work plate support, acarrier for a work point or tool, said support and said carrier beingcapable of relative universal movement upon a single plane, atransmitter arm adapted to cause such relative movement, a tracingstylus carried thereby, a pattern table, a base secured thereto, a pivotscrew carried by said base, a circular pattern plate removably and r0tatably mounted on said pivot and in operative relation to said stylusand having depressed letters, digits, or other characters circularlyarranged upon opposite sides thereof about the axis of said pivot, theletters, digits, or other characters upon one side of said plate havingthe tops thereof presented toward the periphery thereof, and upon theother side presented toward said pivot, a layout sheet carried by saidbase and projecting beyond the edges of said plate, whereby succeedingmovements of said rotary plate necessary to secure the completed design,may be indicated, said sheet being rotatably mounted upon said pivotscrew, clamping means whereby said sheet may be secured in any adjustedposition, an arm rotatably mounted upon said base about an axisconcentric with the axis of said plate including a carriage havingalined depressions therein whereby the stylus will be guided to formlines adjacent the characters of the reproduced design, said carriagebeing capable of movement radially of the axis of movement of said arm,a plate positioned about the axis of movement of said arm having anundulatory or convolute edge, an impact plate carried by said carriageand adapted to co-operate with the edge of said plate, a springconnected with said arm and said carriage whereby said impact plate isnormally forced toward the undulatory or convolute edge of said plate,and said carriage, with the movement of the stylus, will have radialmovement imparted thereto simultaneously with its circumferentialmovement, said plate having the undulatory or convolute edge beingremovably mounted upon said pivot screw, whereby a plate of one contourmay be substituted for a plate of another contour, and a shouldered nutco-operating with said pivot sorew adapted to engage and lock saidpattern plate with relation to said base while permitting free rotarymovement of said arm.

In witness whereof I have hereunto affixed my signature, in the presenceof two subscribing witnesses, this 27th day of June, 1921.

WILLIAM EATON.

Witnesses:

MARY L. HELLEMANN, ROSALYN OHALLORAN.

